AUD Substantive Procedures · Updated November 2026

Tests of Details vs Substantive Analytical Procedures

Both provide evidence about assertions, but they do it differently.

Tests of details

Tests of details inspect transactions, balances, documents, confirmations, calculations, or other specific evidence.

Substantive analytics

Substantive analytical procedures develop expectations and investigate significant differences.

Precision

The auditor needs an expectation precise enough to detect a material misstatement when relying on substantive analytics.

Exam strategy

Specific evidence points to tests of details; expectation-based evidence points to substantive analytics.

The takeaway

Substantive evidence can come from detailed testing or sufficiently precise analytical expectations.

Related Summit resources

FAQ

What is the core idea?

Substantive evidence can come from detailed testing or sufficiently precise analytical expectations.

What should you identify first?

Both provide evidence about assertions, but they do it differently.

Why does this matter on the CPA Exam?

Compare the two main categories of substantive audit procedures.